Interlocking block.



P. E. MALLET.

INTERLOCKING BLOCK.

APPLICATION FILED FEB. 10, I914.

Patented J 11116 13, 1916.

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P. E. MALLE T. INTERLOCKING BLOCK.

APPLICATION FILED FEB. 10, 1914.

1,186,673. Patented June 13, 1916.

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PIERRE EMILE MALLET, OF LA EEoLE, rnAncE.

INTERLOCKING BLOCK.

Application fiIed February 10, 1914.

To all whom it may concern:

Be it known that I, PIERRE EMILE MAL LET, a citizen of the FrenchRepublic, and resident of La Role, France, have invented certain new anduseful Improvements in or Relating to Interlocking Blocks, of which thefollowing is a specification.

The present invention relates to blocks made of any material such asferro concrete for instance and the improvement consists in providingthe horizontal top face with recesses of tapering shape and the bottomof same with corresponding tapering projections in such a manner thatthe projections of one block partially or fully engage the recesses ofthe block placed underneath. Furthermore the smaller lateral sides ofthe blocks are provided with tapering recesses of particular shape insuch a manner that, when two blocks are juxtaposed, and concrete pouredin the adjacent recesses of same, and that a further block is put on topof and interlocks the upper sides of both said adjacent blocks, thelatter are prevented from separately giving way in a downward direction.

The invention is shown in the ing drawings, in which:

Figure 1 is a side View of one constructive form of the block. Fig. 2 isa top plan view corresponding to Fig. 1; Fig. 3 shows a top view of twosuperposed corner blocks; Figs. 46 show corresponding views of adifferent constructive form of such a block. Figs. 7-9 showcorresponding views of a still different constructive form of the block.

In Figs. l-3, 1 is a block having the usual rectangular shape of suchblocks or bricks. At the top face are provided recesses 2, 2, slightlytapering downward and at the opposite or bottom side are providedproaccompanyjections 3, 3, having a tapered shape simi-.

lar to that of the recesses 2 The recesses 2 are placed in such aposition with respect to the projection 3 that half of the distancebetween the centers of said recesses is equal to the distance betweenthe center of the projection and the adjacent edge of the block. On theend faces of each block are provided further recesses made each of anupper straight portion 4: and of a lower tapering portion 5. Theinclined edges of the recesses 2 are steeper than those of the recesses5. In such conditions, in a construc- Specification of Letters Patent.

Patented June 13, 1916.

Serial No. 817,850.

tion comprising a plurality of superposed courses of blocks, no blockcan move separately in a horizontal plane or give way when the adjacentouter recesses 4, 5 of the blocks, forming double recesses are filledwith concrete and that the latter has become solid and forms a singlemass or block.

Figs. et-S show a difierent constructive form of the block 1 having alarger recess 6 at the top face and projections 7 at the.

smaller lower edges. Fig. 6 shows special corner blocks for being withsuch blocks 1.

Figs. 7-9 show a still difl'erent constructive form of the block 1having two tapering recesses 8 at the top side, correspondingly disposedprojections 9 at the lower or bottom side and lateral recesses 10tapering toward the bottom, and opening on the front face of the block,said openings being apparent on the facework. Concreteis poured intosaid adjacent recesses 10. The inclined edges ofv the recesses 8 andprojections 9 are somewhat steeper than those of the lateral recesses10.

Fig. 9 shows in combination two superposed special corner blocks forbeing applied with the blocks 1 shown in Figs. 7 and 8.

Having now fully described my said invention, what I claim and desire tosecureby Letters Patent, is:

A building block comprising a body por-' tion provided on one of itsside faces with openings disposed substantially centrally thereof, lugson the oppositesides of the block adjacent its ends, said block havingopenings in the ends thereof, one of the walls of the openings extendingfrom one edge of the block and inclined inwardly toward the centerthereof and terminating at a point substantially centrally of thethickness of the block, said block having grooves connecting theopenings with the opposite sides of said block, whereby pockets for thereception of cement are formed between the ends of adjacent blocks.

In testimony whereof I have hereunto set my hand in presence of twowitnesses.

HENRY PHILLIPS, C. P. HUJo'r.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

used in combination

